Brake-shoe.



PATENTED JAN. 17, 1905.

H. JONES.

BRAKE SHOE.

APPLICATION FILED DEC. 1a, 1903.

UNITED STATES Patented J annary 17, 1905.

PATENT OFFICE.

HARRY JONES, OF BLOOMFIELD, NEW" JERSEY, ASSIGNOR TO AMERICAN BRAKE SHOE& FOUNDRY COMPANY, OF MAHWVAH, NEW JERSEY, A

CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 780,0d0, dated January1'7, 1905.

Application filedDeoemher 16, 1903. Serial No. 185,402.

To all whmn it may concern.-

Be it known that I, HARRY J ONES, a citizen of the United States,residing at Bloomfield, county of Essex, in the State of New Jersey,

have invented certain new and useful Improvements in Brake-Shoes, ofwhich the following is a specification.

My invention relates to the wearing blocks used on railway brakes andthe like, and par- IO ticularly to improved means for strengthening theback and forming the attaching lugs for cast brake shoes.

The objects of the invention are to provide a superior malleablestrengthening back for a I5 cast shoe and to provide an improvedmalleable lug for attaching the shoe to the brake head; to provide animproved means for bind ing together the attaching lugs and steel backand to anchor both in the body of the shoe,

and to generally improve the structure and to increase the safety ofbrake shoes. These objects, together with other advantages which willhereinafter appear, are attained by means of the constructionillustrated in preferred 2 5 form in the accompanying drawing, wherein-Figure 1 is a perspective view of a brake shoe embodying myimprovements;

Figure 2 is a fragmentary top plan view of the shoe of Figure 1,showingthe cut out 3 places in the malleable metal backing, and

Figure 3 is a central cross section through the brake shoe taken on line(3) in the other two figures.

In the preferred form'of brake shoes as used particularly for enginedriving wheels, in which there is areeess on the Wearing face of theshoe in order to allow for wearing the shoe only on that part of thewheel which does not Wear upon the rail, it is found to be 4 verydifficult to make cast shoes of suliicient strength to stand the wear,and trouble is frequently had in the use of cast shoes with cast lugsthereon, the same sometimes breaking in the tumbler or cleaning devicewhich cleans the castings, and sometimes in actual use. In order tostrengthen the brake shoe and allow it to wear thinner and at the sametime to provide an attaching lug which is perfectly safe and takes upless room in the brake head,

1 provide the shoe 6 with a steel back 5 which 5 preferably lies uponthe surface over the whole back, including the flat portion of the shoeand also the rounded flange portion 10, and the edges 9 of the steelback are preferably turned down and embedded in the cast metal of theshoe in order to secure a firm anchorage therein. The backing isprovided with openings 11 through which project attaching lugs i, whichin this case are preferably made double as shown in Figure 1. The strap4 for the attaching lugs passes under the central portion of the steelback 5, as shown in Figure 3, and then takes an upward loopon each sidethereof and is embedded in the metal under the edges of the cast bodyand may have slightly hooked ends 8 in order to secure a firm anchorage.The outside ends of the lug strap may be embedded directly in the shoeor when preferred, inslightly protruding anchorage lugs 7 formed on thebody in order to get closer to the other edge of the shoe.

By means of the central loop the straps 4. run under and are anchoredbeneath the cen ter of the steel back of the shoe, the attachment ofsaid lugs not depending upon the anchorage on the ends. The backing 5being anchored at both of its edges has a strong hold upon the cast'body of the shoe and all the parts are bound very compactly togetherforming a safe brake shoe, while the wearing sole may be Worn .down verymuch thinner than in the case of a cast shoe which has cast lugs. Otheradvantages of the device will readily occur to those familiar with itsuse.

Having thus described my invention and illustrated its use, what I claimas new, and desire to secure by Letters Patent. is the following:

1. A cast brake shoe having a malleable backing extending over theentire surface thereof and firmly anchored in the body of the shoe, anda double attaching lug secured to the said backing and to the cast body.

2. A east brake shoe having a malleable backing firmly anchored in thebody of the shoe, and a double attaching lug secured to the said backingand to the cast body.

3. A cast metal brake shoe having a steel back and an attaching lugcomprising a strap running entirely beneath a portion of the steel backand exposed on the two sides thereof.

4. A brake shoe comprising a cast body portion, a malleable metalbacking partially embedded in the east body, and a pair of attachinglugs composed of a malleable strap, part of which lies beneath the metalbacking, substantially described.

5. A brake shoe comprising a cast body portion and a pair of attachinglugs composed of a malleable strap.

HARRY JONES.

Witnesses:

CHARLES B. MoPHILLIPs, JESSE Ron.

